At least 25 people died as tornadoes and thunderstorms destroyed parts of Kentucky, Missouri

Authorities said at least 25 people swept Missouri and Kentucky in bad weather over the weekend.

Kentucky Gov. Andy Beshear said the number of weather-related deaths — who attributed them to a tornado originally thought to have landed with EF3 power overnight — rose to 18 by 14 times Saturday afternoon.

"It's already taken too much life," Beshear said. "The house doesn't have a wall standing. All four walls of the house lose the people inside."

The governor said 17 of them were in Laurel County, and one of them was from Pulaski County. One of the dead was a Laurel County firefighter, Beshear said.

Since Friday, Missouri officials have reported seven deaths related to the weather, including five in St. Louis County and two in Scott County.

Beshear vowed to deploy the state’s resources to help Kentuckians affected by the bad weather. He said 10 people remained in critical condition after Kentucky suffered weather-related injuries.

Community members and staff cleared debris near Sunshine Hill, London, Kentucky on Saturday. The tornado hit communities in Somerset, Kentucky and London, killing 10 people and injuring more. Michael Svenson/Getty Images

A spokesman for St. Louis Children's Hospital and Barnes-Jewish Hospital in St. Louis, Missouri, said the facilities received more than 60 patients in total, and 15 cases were treated in the children's facilities, while Barnes-Jewish people saw more than 50 patients. Two patients at Children's Hospital are in critical condition. All others have been discharged from the hospital, a spokesman said Saturday.

The spokesman said that most of the patients in Barnes-Jewish have been discharged or will be discharged soon.

St. Louis Mayor Cara Spencer said bad weather, including two tornadoes in the area on Friday, affected about 5,000 buildings in the city.

Homeland Security Secretary Kristi Noem said in a statement Saturday that she spoke with the governors of Missouri, Kentucky and Illinois and provided them with “federal resources and operations for deadly tornados and storms.”

"We discussed how best to be led by local authorities, but we reinforced DHS' preparation to take immediate action to provide resources and support," Noam said.

Federal forecasters say the bad weather is the result of an unstable air system moving eastward due to warm conflicts south and west, as well as a cool front in the north.

The National Weather Service said there were 28 tornadoes on Friday.

According to Utilities Tracker PowerOutage.us, more than 63,000 utility customers in Missouri had no power on Saturday.